Summary:
- Webhooks form Triggers.ts should now use proxy if it's configured
- Proxy handling code separated to ProxyAgent.ts
- Tests for ProxyAgent
- Integration/API Tests for using Proxy in webhooks
- a bit of refactor - proxy test uses mostly the same codebase as DocApi.ts, but because last one if over 4000 lines long, I've put it into separated file, and extract some common parts (there is some duplicates tho)
- some cleanup in files that I've touched
Test Plan:
Manual test to check if proxy is used on the staging env
Automatic test checking if (fake) proxy was called
Reviewers: paulfitz
Reviewed By: paulfitz
Subscribers: paulfitz
Differential Revision: https://phab.getgrist.com/D3860
